| Autor: |
Hou Chaojian, Li Bo, Li Qingwei, Yang Lijun, Wang Yang, Yang Zhan, Dong Lixin |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
IEEE Open Journal of Nanotechnology, Vol 2, Pp 41-51 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2644-1292 |
| DOI: |
10.1109/OJNANO.2021.3062495 |
| Popis: |
Van der Waals p-n heterojunctions, consist of atomically thin two-dimensional (2D) layer semiconductors, have opened a promising avenue for the realization of ultrathin and ultralight photovoltaic solar cells. This feature enables them particularly be suitable as the micro/nanoscale solar energy-conversion units integrated in wireless power supply micro/nano-systems. However, solar energy harvest in these heterojunctions is hindered by inherent weak interlayer interaction at such ultrathin thickness. Herein, a novel integrated strategy by embedding metallic plasmonic pentamers optical nano-antenna array (ONAA) onto overlap region of black phosphorus-molybdenum disulfide (BP-MoS2) p-n heterojunction is firstly exploited under both a near-infrared laser (λ = 830 nm) and standardized AM1.5G solar irradiation. Results show that profiting from plasmon-induced “hot” electrons and thermal field generating from gigantic near-field enhancement in 15 nm-ultrashort nanogap ONAAs and high intrinsic build-in field in atomically overlap region, this integrated configuration displays enhanced photovoltaic properties. Maximum short-circuits current (Isc = 0.53 μA) and open circuit voltage (Voc = 0.2 V) had been attained. Additional fill factor of 14% and double power conversion efficiencies amplification are measured via comparison of device without/with ONAAs. These findings strongly demonstrate this reliable enhancement strategy with integration of plasmonic physics into 2D heterojunctions for realizing energy harvesting unit in the wireless power supply micro/nano-systems. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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